Chinese electric-vehicle manufacturer Seres has patented a voice-controlled, slide-out toilet that hides beneath a car seat for use while driving [1].
The innovation targets the logistical challenges of long-distance travel and severe traffic congestion. By integrating a restroom directly into the vehicle, the company aims to provide drivers with a convenient way to relieve themselves without leaving the road [4], [5].
According to the patent filings, the system is designed to be discreet and accessible via voice commands [2], [3]. The toilet slides out from under the seating area, allowing the occupant to use the facility while the vehicle remains in operation [3], [4].
The patent for this technology was granted in April 2026 [1]. Seres, and its subsidiary brand Aito, are positioning the feature as a solution for those stuck in lengthy commutes or remote journeys where restroom access is limited [4], [5].
While the company presents the feature as a technological advancement, the concept has drawn mixed reactions. Some observers have raised questions regarding the safety and hygiene of maintaining a waste system within a passenger cabin [6]. Other reports have focused on the technical achievement of the slide-out mechanism and voice integration [1].
The move reflects a broader trend among some Chinese automakers to incorporate unconventional luxury and convenience features into their EV lineups to differentiate themselves in a crowded global market [1], [2].
“The manufacturer developed a slide-out restroom hidden beneath car seats for use during long trips.”
This patent highlights a shift in the EV market where manufacturers are competing not just on battery range or software, but on extreme convenience features. While the practical adoption of an in-car toilet remains uncertain due to sanitation and safety regulations, the development signals a strategy to target long-haul drivers and those in regions prone to extreme traffic congestion.
